US Patent No: 5,308,311

Number of patents in Portfolio can not be more than 2000

Electrically heated surgical blade and methods of making

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A hemostatic surgical blade and methods of manufacturing such blades are provided, wherein the blade comprises a laminate region having a hardenable center layer and highly thermally conductive outer layers, joined to a second region of a low thermal conductivity material. A heating element is secured to the laminate region and in thermal communication therewith to thermally reform the collagen of tissue as it is incised. The heat generated by the heating element is conducted to the cutting edge of the blade to maintain the cutting edge temperature within 20.degree. C. to 70.degree. C. of a user-selected operating temperature. The second region reduces the conduction of heat to the handle of the instrument. The heating element comprises a thermally conductive dielectric layer attached to an outer surface of the laminate region, resistive conductive elements deposited on the dielectric, a second dielectric layer covering the resistive conductor elements, and an abherent coating disposed thereon to reduce coagulum buildup on the blade.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
GYRUS ACMI, INC.SOUTHBOROUGH, MA142
GYRUS ENT L.L.C.BARTLETT, TN81
HEMOSTATIC SURGERY CORPORATION, A CAYMAN ISLANDS COMPANYPALO ALTO, CA11

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eggers, Philip E Dublin, OH 265 27397
Shaw, Robert F San Francisco, CA 22 1708

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Corning Glass Works (2)
4,231,371 Electrically heated surgical cutting instrument 39 1978
4,314,559 Nonstick conductive coating 161 1979
 
EVEREST MEDICAL CORPORATION (2)
4,802,476 Electro-surgical instrument 95 1987
4,958,539 Method of making an electrosurgical spatula blade 76 1989
 
GYRUS MEDICAL, INC. (2)
4,862,890 Electrosurgical spatula blade with ceramic substrate 96 1988
4,850,353 Silicon nitride electrosurgical blade 141 1988
 
HEMOSTATIC SURGERY CORPORATION, A CAYMAN ISLANDS COMPANY (2)
4,485,810 Surgical cutting blade 32 1980
4,481,057 Cutting device and method of manufacture 56 1981
 
AMP-AKZO CORPORATION, A CORP. OF DE (1)
4,770,067 Method of manufacturing surgical cutting tools for thermally aided surgery 15 1987
 
ELLMAN INTERNATIONAL, INC. (1)
4,754,754 Electrosurgical handpiece for blades and needles 61 1986
 
HEMOSTATIC SURGERY CORPORATION (1)
4,848,337 Abherent surgical instrument and method 78 1986
 
MEGADYNE MEDICAL PRODUCTS, INC. (1)
4,785,807 Electrosurgical knife 148 1987
 
Other [Check patent profile for assignment information] (2)
RE31723 Surgical cutting instrument having electrically heated cutting edge 19 1977
4,364,390 Surgical instrument having self-regulating dielectric heating of its cutting edge and method of using the same 38 1979

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
NEUROTHERM, INC. (27)
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6,126,682 Method for treating annular fissures in intervertebral discs 315 1998
6,099,514 Method and apparatus for delivering or removing material from the interior of an intervertebral disc 215 1998
6,261,311 Method and apparatus for treating intervertebral discs 188 1999
6,517,568 Method and apparatus for treating intervertebral discs 56 2000
6,547,810 Method for treating intervertebral discs 67 2000
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6,749,605 Catheter for delivery of energy to a surgical site 58 2001
7,069,087 Apparatus and method for accessing and performing a function within an intervertebral disc 34 2001
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6,997,941 Method and apparatus for treating annular fissures in intervertebral discs 35 2003
7,400,930 Method for treating intervertebral discs 22 2003
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7,267,683 Method for treating intervertebral discs 21 2003
7,309,336 Catheter for delivery of energy to a surgical site 23 2004
8,226,697 Method for treating intervertebral disc 0 2007
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ETHICON ENDO-SURGERY, INC. (22)
6,773,409 Surgical system for applying ultrasonic energy to tissue 156 2001
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7,083,619 Electrosurgical instrument and method of use 177 2002
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6,926,716 Electrosurgical instrument 262 2002
7,011,657 Jaw structure for electrosurgical instrument and method of use 196 2003
7,112,201 Electrosurgical instrument and method of use 74 2003
7,041,102 Electrosurgical working end with replaceable cartridges 261 2003
6,905,497 Jaw structure for electrosurgical instrument 152 2003
7,070,597 Electrosurgical working end for controlled energy delivery 185 2003
7,087,054 Electrosurgical instrument and method of use 181 2003
7,169,146 Electrosurgical probe and method of use 201 2004
7,189,233 Electrosurgical instrument 65 2004
7,354,440 Electrosurgical instrument and method of use 70 2004
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7,632,269 Electrosurgical instrument with replaceable cartridge 4 2005
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7,381,209 Electrosurgical instrument 54 2007
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ORATEC INTERVENTIONS, INC. (17)
6,482,204 Method and apparatus for controlled contraction of soft tissue 26 1996
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6,007,533 Electrocauterizing tip for orthopedic shave devices 47 1998
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6,214,001 Electrocauterizing tool for orthopedic shave devices 81 1998
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6,358,273 Soft tissue heating apparatus with independent, cooperative heating sources 26 1999
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6,391,028 Probe with distally orientated concave curve for arthroscopic surgery 78 2000
6,645,203 Surgical instrument with off-axis electrode 23 2001
6,695,839 Method and apparatus for treatment of disrupted articular cartilage 30 2001
6,645,204 Intervertebral disc device employing flexible probe 2001
 
DOMAIN SURGICAL, INC. (13)
8,523,850 Method for heating a surgical implement 0 2009
8,523,851 Inductively heated multi-mode ultrasonic surgical tool 0 2009
8,523,852 Thermally adjustable surgical tool system 0 2009
8,506,561 Catheter with inductively heated regions 0 2009
8,491,578 Inductively heated multi-mode bipolar surgical tool 0 2009
8,430,870 Inductively heated snare 0 2009
8,419,724 Adjustable ferromagnetic coated conductor thermal surgical tool 0 2009
8,414,569 Method of treatment with multi-mode surgical tool 0 2009
8,377,052 Surgical tool with inductively heated regions 0 2009
8,372,066 Inductively heated multi-mode surgical tool 0 2009
8,292,879 Method of treatment with adjustable ferromagnetic coated conductor thermal surgical tool 0 2009
8,425,503 Adjustable ferromagnetic coated conductor thermal surgical tool 0 2012
8,617,151 System and method of controlling power delivery to a surgical instrument 0 2012
 
SURGINETICS INC. (8)
8,562,603 Method for conducting electrosurgery with increased crest factor 0 2006
8,357,154 Multielectrode electrosurgical instrument 0 2006
8,357,155 Multielectrode electrosurgical blade 0 2006
7,935,112 Electrosurgical instrument 0 2006
7,935,113 Electrosurgical blade 1 2006
7,896,875 Battery powered electrosurgical system 0 2006
7,867,225 Electrosurgical instrument with needle electrode 0 2006
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ATRICURE, INC. (4)
6,179,837 Bipolar electrosurgical scissors 295 1995
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6,464,701 Bipolar electrosurgical scissors 203 2000
6,350,264 Bipolar electrosurgical scissors 232 2000
 
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6,287,305 Electrosurgical instrument 91 1997
6,241,723 Electrosurgical system 167 1999
6,533,781 Electrosurgical instrument 41 2000
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AMADA SURGICAL, INC. (2)
5,643,256 Gold-plated electrosurgical instrument 61 1995
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APPLIED MEDICAL RESOURCES CORPORATION (2)
7,909,819 Monopolar electrosurgical return electrode 6 2006
8,048,068 Monopolar electrosurgical return electrode 0 2011
 
COVIDIEN LP (2)
8,292,888 Bipolar or ultrasonic surgical device 3 2002
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5,476,461 Endoscopic light delivery system 24 1994
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Utah Medical Products, Inc. (2)
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Applied Komatsu Technology, Inc. (1)
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BAKERY HOLDINGS LLC (1)
6,305,149 Method and apparatus for packaging meat 3 1998
 
Clinicon Corporation (1)
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6,511,479 Electrosurgical blade having directly adhered uniform coating of silicone release material and method of manufacturing same 45 2001
 
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HEMOSTATIX MEDICAL TECHNOLOGIES LLC (1)
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Hemostatix Medical Techs, LLC (1)
8,142,425 Hemostatic surgical blade, system and method of blade manufacture 5 2007
 
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7,244,256 Electrosurgical device with adhesive-free insulating piece and method of making same 4 2004
 
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6,003,419 Microcutting device and incising method 9 1998
 
OLYMPUS CORPORATION (1)
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OLYMPUS OPTICAL CO., LTD. (1)
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SMITH & NEPHEW, INC. (1)
7,150,747 Electrosurgical cutter 35 2003
 
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WATLOW ELECTRIC MANUFACTURING COMPANY (1)
7,304,276 Thick film heater integrated with low temperature components and method of making the same 0 2001
 
Other [Check patent profile for assignment information] (2)
5,827,281 Insulated surgical scissors 276 1996
6,230,603 Cutting blade for resistance-heated elastomer cutters 1 1996